Patents by Inventor Ravi Silva
Ravi Silva has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20260209834Abstract: The invention relates to nucleic acid detection, and particularly, although not exclusively, to electrochemical methods for detecting target nucleic acid sequences in a sample obtained from a subject. The nucleic acid detection methods of the invention can also be used to diagnose or prognose both infectious and non-infectious diseases in a subject, or to determine whether a pathogen is drug resistant. The invention extends to apparatus for performing improved nucleic acid detection using electrochemical methods.Type: ApplicationFiled: November 14, 2023Publication date: July 23, 2026Inventors: Khushboo BORAH SLATER, Johnjoe MCFADDEN, Roberto LA RAGIONE, Ravi SILVA, Muhammad AHMAD, Aurore POIRIER
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Publication number: 20230067839Abstract: The disclosure provides an apparatus for depositing poly(p-xylylene) onto a component. The apparatus comprises a deposition chamber configured to receive a component to be coated therein; an electrical power supply; a platen, disposed inside the deposition chamber and comprising an electrically conductive material, wherein the platen is electrically connected to the electrical power supply and configured to support the component; a monomer reservoir, configured to receive a monomer of poly(p-xylylene) therein; a monomer conduit extending between the monomer reservoir and the deposition chamber; and a heating means configured to heat the monomer reservoir and the monomer conduit to a temperature of between 25 and 250° C.Type: ApplicationFiled: December 15, 2020Publication date: March 2, 2023Inventors: Ravi Silva, Christopher Toby Gibb Smith, Jose Anguita, Michal Delkowski
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Patent number: 10843812Abstract: Components having fibre-reinforced composite structures are disclosed. The component comprises a plurality of structural fibres embedded in a cured matrix material and a plurality of nanostructures such as carbon nanotubes extending from one or more of the structural fibres. In some embodiments a density of the nanostructures is at least 107 nanostructures per cm2 of surface area of the one or more structural fibres. In some embodiments, the nanostructures extend from an outer fibre proximal to an outer surface of the component but not from an inner fibre distal from the outer surface. In some embodiments the one or more structural fibres from which the nanostructures extend are free of a sizing agent.Type: GrantFiled: December 8, 2015Date of Patent: November 24, 2020Assignees: SHORT BROTHERS PLC, UNIVERSITY OF SURREYInventors: Paolo Ballocchi, Philip Jenkins, Ian Hamerton, Ravi Silva, Thomas Pozegic
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Patent number: 10550232Abstract: An article comprises a carbon fibre reinforced plastic (CFRP) substrate, a buffer layer disposed adjacent the substrate, the buffer layer comprising a poly(para-xylylene) polymer; and a moisture barrier coating disposed adjacent the buffer layer.Type: GrantFiled: March 7, 2014Date of Patent: February 4, 2020Assignees: University of Surrey, Airbus Defence and Space GMBHInventors: Jose Virgilio Anguita Rodriguez, Ravi Silva, Ian Hamerton, Winnie Tang, Thomas Theo Stute
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Publication number: 20180265217Abstract: Components having fibre-reinforced composite structures are disclosed. The component comprises a plurality of structural fibres embedded in a cured matrix material and a plurality of nanostructures such as carbon nanotubes extending from one or more of the structural fibres. In some embodiments a density of the nanostructures is at least 107 nanostructures per cm2 of surface area of the one or more structural fibres. In some embodiments, the nanostructures extend from an outer fibre proximal to an outer surface of the component but not from an inner fibre distal from the outer surface. In some embodiments the one or more structural fibres from which the nanostructures extend are free of a sizing agent.Type: ApplicationFiled: December 8, 2015Publication date: September 20, 2018Inventors: Paolo BALLOCCHI, Philip JENKINS, Ian HAMERTON, Ravi SILVA, Thomas POZEGIC
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Publication number: 20160009876Abstract: An article comprises a carbon fibre reinforced plastic (CFRP) substrate, a buffer layer disposed adjacent the substrate, the buffer layer comprising a poly(para-xylylene) polymer; and a moisture barrier coating disposed adjacent the buffer layer.Type: ApplicationFiled: March 7, 2014Publication date: January 14, 2016Applicants: University of Surrey, Astrium limitedInventors: Jose Virgilio Anguita RODRIGUEZ, Ravi SILVA, Ian HAMERTON-RUSKIN, Winnie TANG, Thomas Theo STUTE
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Patent number: 7592191Abstract: A field emission backplate formed by laser crystallizing of an area of amorphous semiconductor based material. Emitter sites result from the rough surface texture caused by the crystallization process. The crystallization may be localized using laser interferometry, and profiled emitter tips grown on the localized crystalline areas. Such backplates can be used in field emission devices emitting into either a vacuum or a wide band gap light-emitting polymer. Furthermore, a backplate having self-aligned gates can be formed by depositing an insulator layer and a metal layer over the emitter tips, removing the top of the metal layer and etching away the insulator, leaving each tip surrounded by a metal rim. A planarizing agent can be used to refine this process.Type: GrantFiled: February 6, 2004Date of Patent: September 22, 2009Assignee: The University Court of the University of DundeeInventors: Mervyn John Rose, Ravi Silva, John Shannon
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Patent number: 7304420Abstract: A field emission device having improved properties and which finds use in display devices, such as a flat panel displays. Known devices and displays suffer from problems such as complexity of fabrication and limited color gamut. The present device provides a field emission backplate which is made from a substantially semiconductor based material and has a plurality of grown tips. The device also includes at least one electro-luminescent or photo-luminescent material having a fluorescent material such as a fluorescent dye doped material chemically attached thereto.Type: GrantFiled: December 17, 2004Date of Patent: December 4, 2007Assignee: The University Court of the University of DundeeInventors: Mervyn John Rose, Ravi Silva, John Shannon, Janos Peter Hajto
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Publication number: 20050179366Abstract: A field emission device having improved properties and which finds use in display devices, such as a flat panel displays. Known devices and displays suffer from problems such as complexity of fabrication and limited color gamut. The present device provides a field emission backplate which is made from a substantially semiconductor based material and has a plurality of grown tips. The device also includes at least one electro-luminescent or photo-luminescent material having a fluorescent material such as a fluorescent dye doped material chemically attached thereto.Type: ApplicationFiled: December 17, 2004Publication date: August 18, 2005Inventors: Mervyn Rose, Ravi Silva, John Shannon, Janos Hajto
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Publication number: 20040197942Abstract: A field emission backplate formed by laser crystallizing of an area of amorphous semiconductor based material. Emitter sites result from the rough surface texture caused by the crystallization process. The crystallization may be localized using laser interferometry, and profiled emitter tips grown on the localized crystalline areas. Such backplates can be used in field emission devices emitting into either a vacuum or a wide band gap light-emitting polymer. Furthermore, a backplate having self-aligned gates can be formed by depositing an insulator layer and a metal layer over the emitter tips, removing the top of the metal layer and etching away the insulator, leaving each tip surrounded by a metal rim. A planarizing agent can be used to refine this process.Type: ApplicationFiled: February 6, 2004Publication date: October 7, 2004Inventors: Mervyn John Rose, Ravi Silva, John Shannon